Aerodynamic side skirt for a truck



FIG. 1 is a perspective view of an aerodynamic side skirt for a truck showing my new design;

FIG. 2 is a perspective view of an aerodynamic side skirt for a truck showing a second embodiment of my new design;

FIG. 3 is an enlarged side elevation view of FIG. 2; and

FIG. 4 is an enlarged side elevation view of FIG. 1.

The broken line showing of a truck or portions of a truck cab shown in all four views of the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an aerodynamic side skirt for a truck, as shown and described. 